Regensburg 2022 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 35: Poster 2

MA 35.5: Poster

Donnerstag, 8. September 2022, 16:00–18:00, P4

Sensing of magnetic excitations in 2D-materials with NV-spins — •Hossein Mohammadzadeh, Dominik Maile, and Joachim Ankerhold — ICQ and IQST, University of Ulm, Ulm, Germany

Magnetism in two-dimensional (2D) van der Waals (vdW) materials has recently emerged as one of the most promising areas in condensed matter research, with many exciting emerging properties and significant potential for applications ranging from topological magnonics to low-power spintronics, quantum computing, and optical communications [1]. The nitrogen-vacancy (NV) center in diamond is an excellent platform to detect nanoscale signatures in magnetic materials [2]. The spin state of the NV center can be easily initialized and read out in the optical domain and coherently manipulated with microwave fields. Motivated by and in collaboration with recent experimental activities in this direction [3], in this poster we describe the general strategy and first theoretical results. The latter is based on a description of low energy magnetic excitations in terms of a Kitaev-Heisenberg model and the coupling of magnons in the trivial and in the topological phase to single NV-electronic spins.

[1] Qing Hua Wang et al., ACS Nano, 16, 5, 6960-7079 (2022)

[2] Francesco Casola, Toeno van der Sar, and Amir Yacoby. Nat Rev Mater 3, 17088 (2018)

[3] Jörg Wrachtrup et al. Nat Commun 12, 1989 (2021)